A system self-heating dry quenching coke dosing device and its working method

Abstract

The invention relates to the field of coking dry coke quenching boilers and the technical field of boiler water dosing, and discloses a system self-heating dry coke quenching dosing device, comprising: a liquid medicine heating and stirring tank, used for accommodating and stirring liquid medicine; a composite heating system, arranged in the liquid medicine heating and stirring tank, used for heating the liquid medicine, the composite heating system comprising a self-heating device and an auxiliary heating device; the self-heating device is arranged inside the liquid medicine heating and stirring tank, used for heating the liquid medicine; the auxiliary heating device is arranged inside the liquid medicine heating and stirring tank and is located on the side of the self-heating device, used for heating the liquid medicine when the self-heating is insufficient; a temperature control device, used for measuring the current liquid medicine temperature in the liquid medicine heating and stirring tank; and controlling the operation of the composite heating system according to the current liquid medicine temperature, and also discloses a working method of the system self-heating dry coke quenching dosing device, which controls the temperature of the liquid medicine by utilizing the waste heat of the dry coke quenching system and the electric heating dual system, thereby preventing the liquid medicine from failing at a low temperature, thereby ensuring the safe and stable operation of the dry coke quenching boiler system.

Description

Technical Field

[0001] The invention relates to the field of coking dry quenching boilers and boiler water dosing technology, and in particular to a system self-heating dry quenching dosing device and a working method thereof. Background Art

[0002] As an important part of the dry quenching of coke using coking waste heat, the CDQ boiler's own stable operation is not only related to the operation of the boiler system, but also affects the stable operation of the CDQ oven system. All boiler operations are extremely important, and adding chemicals is a measure to ensure the long-term stable operation of the boiler.

[0003] To prevent the freezing of the boiler dosing system, two solutions are currently commonly used: the first is to use low-pressure steam heating; the second is to use electric heating. However, both methods require additional power input, have the disadvantages of high failure rate and increased operating costs. Summary of the invention

[0004] The object of the present invention is to provide a system self-heating dry coke quenching dosing device and a working method thereof, so as to overcome the defects of the prior art, based on the self-heating characteristics of the dry coke quenching system, use the system's own heat to control the temperature of the chemical liquid, and achieve the energy-saving effect of waste heat insulation; specifically, by using the dry coke quenching system waste heat and electric heating dual systems to control the temperature of the chemical liquid, the chemical liquid is prevented from failing at low temperatures, thereby ensuring the safe and stable operation of the dry coke quenching boiler system.

[0005] The first aspect of the present invention is to provide a system self-heating dry quenching coke dosing device, comprising:

[0006] The liquid medicine heating and stirring tank 1 is used for containing and stirring the liquid medicine;

[0007] A composite heating system is arranged in the liquid medicine heating and stirring tank 1, and is used to heat the liquid medicine. The composite heating system comprises a self-heating device 2 and an auxiliary heating device 3; wherein: the self-heating device 2 is arranged inside the liquid medicine heating and stirring tank 1, and is used to heat the liquid medicine; the auxiliary heating device 3 is arranged inside the liquid medicine heating and stirring tank 1 and is located below the self-heating device 2, and is used to heat the liquid medicine when the self-heating is insufficient;

[0008] The temperature control device 4 is used to measure the current temperature T of the liquid medicine in the liquid medicine heating and stirring tank 1 ; and to control the operation of the composite heating system according to the current liquid medicine temperature T.

[0009] Preferably, the self-heating device 2 includes a heat exchange pipe, a pipe inlet 22, a bypass pipe valve and a pipe outlet 21. The heat medium from the dry coke quenching system enters the heat exchange pipe through the pipe inlet 22 to heat the liquid medicine in the liquid medicine heating stirring tank 1 to form hot water. The hot water flows out through the pipe outlet 21 after passing through the heat exchange pipe. The opening and closing of the pipe inlet 22 are controlled by the temperature control device 4. When the current liquid medicine temperature T is less than the first preset temperature T1, the temperature control device 4 controls the pipe inlet 22 to open. When the current liquid medicine temperature T is greater than the second preset temperature T2, the temperature control device 4 controls the pipe inlet 22 to close and the bypass pipe valve to open.

[0010] Preferably, the heat exchange pipe is a heat exchange coil and a heat exchange straight pipe, or a combination of both, and the heat exchange form is indirect heat exchange.

[0011] Preferably, the heat exchange pipe is made of 304 stainless steel.

[0012] Preferably, the self-heating device 2 also includes: an inlet temperature measuring device and an outlet temperature measuring device; the inlet temperature measuring device and the outlet temperature measuring device respectively measure the temperature of the heat medium when it enters the pipeline inlet 22 and the temperature when it flows out of the pipeline outlet 21, and feed back the two temperature values ​​to the temperature control device 4, and the temperature control device controls the safety of the dosing device and the heat exchange efficiency of the dosing device during operation according to the two temperature values.

[0013] Preferably, when the temperature of the self-heating water is insufficient and still cannot reach the first preset temperature T1 when the pipe inlet 22 of the self-heating device 2 is fully opened, the auxiliary heating device 3 is turned on while the self-heating device 2 is turned on to heat the liquid medicine at the same time.

[0014] Preferably, the heat medium is boiler deoxygenated return water preheated by CDQ heat pipes; the pipeline inlet 22 of the self-heating device 2 is connected to the pipeline of the boiler deoxygenated return water, and the pipeline outlet 21 of the self-heating device 2 is connected to the deoxygenated water tank.

[0015] Preferably, the first preset temperature T1 is 25-30°C; the second preset temperature T2 is 40-45°C.

[0016] Preferably, the system's self-thermal dry quenching coke dosing device also includes a liquid medicine delivery pump 5 and a liquid medicine outlet 6, wherein the liquid medicine delivery pump 5 is installed on the liquid medicine outlet 6, and the liquid medicine outlet 6 is arranged on one side of the lower part of the liquid medicine heating and stirring tank 1, and is used to pump out the liquid medicine through the liquid medicine delivery pump 5.

[0017] The second aspect of the present invention is to provide a working method of a system self-heating dry quenching coke dosing device, comprising:

[0018] S1, obtain the current liquid medicine temperature T through the temperature control device 4; when the current liquid medicine temperature T is less than the first preset temperature T1, execute S2; when the current liquid medicine temperature T is greater than the second preset temperature T2, execute S3; when the self-heating water temperature is insufficient and still cannot reach the first preset temperature T1 when the pipeline inlet 22 of the self-heating device 2 is fully opened, execute S4;

[0019] S2, the temperature control device 4 controls the pipe inlet 22 to open, and hot water from the dry coke quenching system enters the heat exchange coil through the pipe inlet 22 of the heat exchange coil to heat the liquid in the liquid heating stirring tank 1, and after heat exchange, the water flows through the pipe and then flows out through the pipe outlet 21;

[0020] S3, the temperature control device 4 controls the pipeline inlet 22 to be closed and the bypass pipeline valve to be opened.

[0021] S4, turning on the self-heating device 2 and the auxiliary heating device 3 to heat the liquid medicine at the same time.

[0022] Beneficial effects of the device and working method of the present invention:

[0023] The system's self-heating boiler dosing device is equipped with a heating device on the drug liquid, which uses the system's own heat source to heat the drug liquid; an auxiliary heating device is installed in the drug liquid tank, which is used to heat the drug liquid; and a temperature control device is installed to make the drug liquid in the drug liquid tank reach the temperature range. In this way, the drug liquid in the drug tank can be effectively heated, the heating temperature of the drug liquid can be effectively controlled, and the drug liquid can be prevented from failing at low temperatures, thereby ensuring the safe and stable operation of the boiler dry coke quenching system, avoiding drug liquid waste, and reducing operating costs; and the boiler dosing device has a simple structure, is durable, and has low maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the related technologies, the drawings required for use in the specific embodiments or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic structural diagram of a system self-heating dry quenching dosing device according to an embodiment of the present invention.

[0026] Reference numerals:

[0027] 1-medicine liquid heating stirring tank; 2-self-heating device; 21-pipeline outlet; 22-pipeline inlet;

[0028] 3- auxiliary heating device; 4- temperature control device; 5- liquid medicine delivery pump; 6- liquid medicine outlet. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] See also Figure 1 This embodiment provides a system self-heating dry quenching coke dosing device, including:

[0033] The liquid medicine heating and stirring tank 1 is used for containing and stirring the liquid medicine;

[0034] A composite heating system is arranged in the liquid medicine heating and stirring tank 1, and is used to heat the liquid medicine. The composite heating system comprises a self-heating device 2 and an auxiliary heating device 3; wherein: the self-heating device 2 is arranged inside the liquid medicine heating and stirring tank 1, and is used to heat the liquid medicine; the auxiliary heating device 3 is arranged inside the liquid medicine heating and stirring tank 1 and is located below the self-heating device 2, and is used to heat the liquid medicine when the self-heating is insufficient;

[0035] The temperature control device 4 is used to measure the current temperature T of the liquid medicine in the liquid medicine heating and stirring tank 1 ; and to control the operation of the composite heating system according to the current liquid medicine temperature T.

[0036] As a preferred embodiment, the self-heating device 2 includes a heat exchange pipe, a pipe inlet 22, a bypass pipe valve and a pipe outlet 21. The heat medium from the dry quenching system enters the heat exchange pipe through the pipe inlet 22 to heat the liquid in the liquid heating stirring tank 1 to form hot water. The hot water flows out through the pipe outlet 21 after passing through the heat exchange pipe. The opening and closing of the pipe inlet 22 are controlled by the temperature control device 4. When the current liquid temperature T is less than the first preset temperature T1, the temperature control device 4 controls the pipe inlet 22 to open. When the current liquid temperature T is greater than the second preset temperature T2, the temperature control device 4 controls the pipe inlet 22 to close and the bypass pipe valve to open.

[0037] As a preferred embodiment, the heat exchange pipe is a combination of one or both of a heat exchange coil and a heat exchange straight pipe, and the heat exchange form is indirect heat exchange. Of course, those skilled in the art should know that other forms of pipes can also be used. As long as they can achieve the technical effect of exchanging heat with the medicinal liquid and thus heating the medicinal liquid, they are all within the protection scope of the present invention; the material of the heat exchange pipe is 304 stainless steel.

[0038] In this embodiment, hot water from the dry quenching system enters the heat exchange coil through the pipe inlet 22 of the heat exchange coil to heat the liquid in the liquid heating stirring tank 1. After heat exchange, the water flows through the pipe and flows out through the pipe outlet 21; the opening and closing of the pipe inlet 22 are controlled by the temperature control device 4; when the current liquid temperature T is less than the first preset temperature T1, the temperature control device 4 controls the pipe inlet 22 to open; when the current liquid temperature T is greater than the second preset temperature T2, the temperature control device 4 controls the pipe inlet 22 to close, and the bypass pipe valve is opened.

[0039] As a preferred embodiment, the self-heating device 2 also includes: an inlet temperature measuring device and an outlet temperature measuring device; the inlet temperature measuring device and the outlet temperature measuring device respectively measure the temperature of the heat medium when it enters the pipeline inlet 22 and the temperature when it flows out of the pipeline outlet 21, and feed back the two temperature values ​​to the temperature control device 4, and the temperature control device controls the dosing device to operate safely and with a higher heat exchange efficiency according to the two temperature values.

[0040] As a preferred embodiment, when the temperature of the self-heating water is insufficient and still cannot reach the first preset temperature T1 when the pipe inlet 22 of the self-heating device 2 is fully opened, the auxiliary heating device 3 is turned on while the self-heating device 2 is turned on to heat the liquid medicine at the same time. Through these two methods, the heating temperature of the liquid medicine can be effectively controlled to prevent the liquid medicine from failing at a low temperature, thereby ensuring the safe operation of the boiler.

[0041] As a preferred embodiment, the heat medium is the deoxygenated return water of the boiler after preheating by the dry quenching heat pipe. Of course, other heat media compatible with the dry quenching system may also be used as the heat medium; the pipeline inlet 22 of the self-heating device 2 is connected to the pipeline of the deoxygenated return water of the boiler, and the pipeline outlet 21 of the self-heating device 2 is connected to the deoxygenated water tank.

[0042] As a preferred implementation, the first preset temperature T1 (lowest temperature) is 25-30°C; the second preset temperature T2 (highest temperature) is 40-45°C.

[0043] As a preferred embodiment, the system's self-thermal dry quenching coke dosing device also includes a liquid medicine delivery pump 5 and a liquid medicine outlet 6, wherein the liquid medicine delivery pump 5 is installed on the liquid medicine outlet 6, and the liquid medicine outlet 6 is arranged on one side of the lower part of the liquid medicine heating and stirring tank 1, and is used to pump out the liquid medicine through the liquid medicine delivery pump 5.

[0044] See also Figure 1 , Figure 1 The schematic diagram of the self-heating boiler dosing device of the present invention is shown in FIG. The boiler dosing device comprises a liquid medicine heating and stirring tank 1, a heating device 2, an auxiliary heating device 3, a temperature control device 4 and a liquid medicine delivery pump 5.

[0045] The liquid medicine heating and stirring tank 1 is used to accommodate liquid medicine. The self-heating device 2 is arranged above the liquid medicine heating and stirring tank 1, and is used to heat the liquid medicine. The heating device includes a pipeline inlet 22, a bypass pipeline valve, an inlet temperature measurement, an outlet temperature measurement, and a pipeline outlet 21. The heat medium from the dry coke quenching self-heating source enters the pipeline through the pipeline inlet to heat the liquid medicine in the liquid medicine tank. The hot water flows through the pipeline and flows out through the pipeline outlet. The auxiliary heating device 3 is arranged in the liquid medicine heating and stirring tank, and is used to heat the liquid medicine when the self-heating is insufficient; wherein the heat medium is the deoxygenated return water of the boiler after the dry coke quenching heat pipe is preheated, the self-heating pipeline inlet is connected to the boiler deoxygenation return water pipeline, and the self-heating pipeline outlet is connected to the deoxygenation water tank. The temperature control device 4 is used to measure the temperature T of the liquid medicine in the liquid medicine tank, and control the opening and closing of the pipeline inlet and outlet and the bypass. When the temperature control device 4 detects that the temperature T in the liquid medicine tank 1 is lower than the lowest temperature, the temperature control device controls the pipeline inlet 22 to open; when T is higher than the highest temperature, the temperature control device controls the pipeline inlet 21 to close and the bypass valve to open. When the self-heating inlet is fully opened and still cannot reach the preset temperature, the auxiliary heating device 3 is turned on to heat the liquid medicine; wherein the lowest temperature T1 is 25-30°C, and the highest temperature T2 is 40-45°C.

[0046] The second aspect of the present invention is to provide a working method of a system self-heating dry quenching coke dosing device, comprising:

[0047] S1, obtain the current liquid medicine temperature T through the temperature control device 4; when the current liquid medicine temperature T is less than the first preset temperature T1, execute S2; when the current liquid medicine temperature T is greater than the second preset temperature T2, execute S3; when the self-heating water temperature is insufficient and still cannot reach the first preset temperature T1 when the pipeline inlet 22 of the self-heating device 2 is fully opened, execute S4;

[0048] S2, the temperature control device 4 controls the pipe inlet 22 to open, and hot water from the dry coke quenching system enters the heat exchange coil through the pipe inlet 22 of the heat exchange coil to heat the liquid in the liquid heating stirring tank 1, and after heat exchange, the water flows through the pipe and then flows out through the pipe outlet 21;

[0049] S3, the temperature control device 4 controls the pipeline inlet 22 to be closed and the bypass pipeline valve to be opened.

[0050] S4, turning on the self-heating device 2 and the auxiliary heating device 3 to heat the liquid medicine at the same time.

[0051] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above embodiments can be implemented by software, or by means of software plus necessary general hardware platforms. Based on such understanding, the technical solutions of the above embodiments can be embodied in the form of software products, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.), including several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A system self-heating dry quenching coke dosing device, characterized in that: include: A liquid medicine heating and stirring tank (1), used for containing and stirring the liquid medicine; A composite heating system is arranged in the liquid medicine heating and stirring tank (1) and is used to heat the liquid medicine. The composite heating system comprises a self-heating device (2) and an auxiliary heating device (3); wherein: the self-heating device (2) is arranged inside the liquid medicine heating and stirring tank (1) and is used to heat the liquid medicine; the auxiliary heating device (3) is arranged inside the liquid medicine heating and stirring tank (1) and is located below the self-heating device (2) and is used to heat the liquid medicine when self-heating is insufficient; The temperature control device (4) is used to measure the current liquid medicine temperature T in the liquid medicine heating and stirring tank (1); and to control the operation of the composite heating system according to the current liquid medicine temperature T; The self-heating device (2) comprises a heat exchange pipe, a pipe inlet (22), a bypass pipe valve and a pipe outlet (21); a heat medium from the dry coke quenching system enters the heat exchange pipe through the pipe inlet (22) to heat the liquid medicine in the liquid medicine heating stirring tank (1) to form hot water; the hot water flows out through the pipe outlet (21) after passing through the heat exchange pipe; the pipe inlet (22) is controlled to be opened and closed by the temperature control device (4); when the current liquid medicine temperature T is less than a first preset temperature T1, the temperature control device (4) controls the pipe inlet (22) to be opened; when the current liquid medicine temperature T is greater than a second preset temperature T2, the temperature control device (4) controls the pipe inlet (22) to be closed and the bypass pipe valve to be opened; The heat exchange pipe is a heat exchange coil or a heat exchange straight pipe, or a combination of both, and the heat exchange form is indirect heat exchange; The material of the heat exchange pipe is 304 stainless steel; The self-heating device (2) further comprises: an inlet temperature measuring device and an outlet temperature measuring device; the inlet temperature measuring device and the outlet temperature measuring device respectively measure the temperature of the heat medium when it enters the pipeline inlet (22) and the temperature of the heat medium when it flows out of the pipeline outlet (21), and feed the two temperature values ​​back to the temperature control device (4); the temperature control device controls the safety of the dosing device and the heat exchange efficiency of the dosing device during operation according to the two temperature values; When the temperature of the self-heating water is insufficient and still cannot reach the first preset temperature T1 when the pipe inlet (22) of the self-heating device (2) is fully opened, the auxiliary heating device (3) is turned on while the self-heating device (2) is turned on to heat the liquid medicine at the same time; The heat medium is boiler deoxygenated return water preheated by the dry quenching heat pipe; the pipeline inlet (22) of the self-heating device (2) is connected to the pipeline of the boiler deoxygenated return water, and the pipeline outlet (21) of the self-heating device (2) is connected to the deoxygenated water tank; The system self-heating dry quenching coke dosing device further comprises a liquid medicine delivery pump (5) and a liquid medicine outlet (6). The liquid medicine delivery pump (5) is mounted on the liquid medicine outlet (6). The liquid medicine outlet (6) is arranged on one side of the lower part of the liquid medicine heating and stirring tank (1) and is used to pump out the liquid medicine through the liquid medicine delivery pump (5).

2. A system self-heating dry quenching coke dosing device according to claim 1, characterized in that: The first preset temperature T1 is 25-30°C; the second preset temperature T2 is 40-45°C.

3. A method for operating the system self-heating dry quenching dosing device according to any one of claims 1-2, characterized in that: include: S1, obtaining the current temperature T of the medicine liquid through the temperature control device (4); when the current temperature T of the medicine liquid is less than the first preset temperature T1, executing S2; when the current temperature T of the medicine liquid is greater than the second preset temperature T2, executing S3; when the temperature of the self-heating water is insufficient and still cannot reach the first preset temperature T1 when the pipeline inlet (22) of the self-heating device (2) is fully opened, executing S4; S2, the temperature control device (4) controls the pipe inlet (22) to open, and hot water from the dry coke quenching system enters the heat exchange coil through the pipe inlet (22) of the heat exchange coil to heat the liquid in the liquid heating stirring tank (1), and after heat exchange, the water flows through the pipe and then flows out through the pipe outlet (21); S3, the temperature control device (4) controls the pipeline inlet (22) to be closed and the bypass pipeline valve to be opened; S4, turning on the self-heating device (2) and simultaneously turning on the auxiliary heating device (3) to heat the liquid medicine at the same time.

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